Improved thilii-cottfiiing



G. W. DUBUISSON.

Thill Coupling. No. 102,099. Patented April 19; 1870.

new itltt5 GEORGE W. DUBUISSON, OF NORWICH, CONNECTICUT.

Letters Patent N 102,099, dated April 19, 1810.

mnovnnt mmL-couPLING.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, GEORGE W. DUBUISSON, of

Norwich, in the county of New London and in the State of Connecticut, have invented certain new and useful Improvements in Thin-Couplings; and do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanying drawings and to theletters of reference marked thereon, making a part of this specification.

The nature of my invention consists in the construction and arrangement of a thill-coupling, as'will be hereinafter fully set forth.

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its construction and operation, referring to the annexed'drawings, in

' which- Figure 1 is a longitudinal vertical section; and

Figure 2, a side View of the entire coupling. Figure 3 is a plain view of. the box in which the shaft-iron is placed; and

Figure 4 is a. rear view of the shaft-iron.

- A represents the iron which is fastened by a clip, or other suitable means, to the axle. This iron is, at its outer .end, provided with a box, B, which is round and open on top, with flanges a 0 extending on each side, as shown in fig. 3, leaving in the centre, both at front and'rear, a recess, 1), for the thill-iron to move in.

The thill-iron c is provided at its lear end with a fianged\bloek, D, so constructed that the flanges d d on the same will fit between the flanges a a, in the mouth of the box 'B, and when entirely inserted it will turn around within said box, the thill-iron itself, or

rather the front end of the-block, will fit and move freely in'the recess 1:.

On the thill-iron o is secured a cap, E, which fits and covers the opening in the box or'cup B.

The advantages of this coupling are the ease with which the thill is dropped into or detached from the cup, and, when dropped, is held securely.

The box or cup B is so arranged that it will hold a I suflicient quantity of oil for six months? use, or longer. The cap or coverE prevents sand from being thrown into the cup, either from the horses feet or from the wheel. r

Working in oil there can be no perceptible wear and consequently no rattling, doing away with bolts,

springs, and rubber-backing to take up wear.

It will be noticed that in lifting the thill the centre is shifted, and the back part of the cap does not fit closely, butsufliciently so to protect the oil-cup from dilt getting in.

Having thus fully described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

1. Y The thill-iron C, provided with flanged block D and cap E, substantially as and for the purposes here- 'in set forth.

cno. w. DUBUISSON. n s.]

- Witnesses E. FULLER, E. B. ALLEN. 

